Electronic Thesis and Dissertation Repository


Master of Science


Health and Rehabilitation Sciences

Collaborative Specialization

Musculoskeletal Health Research


Trevor Birmingham


The lateral extra-articular tenodesis (LET) performed with anterior cruciate ligament (ACL) reconstruction is intended to add stability to the knee, yet the procedure may compromise lateral knee soft tissues that may affect performance during functionally demanding activities. This study compared knee landing biomechanics during a Drop Vertical Jump (DVJ) performed by 154 patients randomized to ACL reconstruction alone or ACL reconstruction plus LET. Three-dimensional knee moments and angles during the DVJ were investigated at 6 and 12 months postoperative. The peak knee abduction moment (KAM) was the primary outcome measure. There were no statistically significant differences between groups in any of the landing biomechanics assessed. The mean difference (95% confidence interval) in the peak KAM between groups was -4.15 Nm (-10.36 – 2.05) at 6 month and 1.92 Nm (-4.77 – 5.89) at 12 months for patients that completed testing at both follow-ups. The present findings suggest the LET does not benefit or hinder landing biomechanics.